Install Oblivion male nude mod :

Keep a copy of the file which is in a folder \Data\Meshes\Characters \_ male\lowerbody.nif
Move files from archive Oblivion male nude pack folder Data to a corresponding folder in section with game.
At desire to change erection degree rename one of files lowerbody1.nif
Or lowerbody2.nif on lowerbody.nif, preliminary having renamed a replaced file lowerbody.nif
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Uninstall Oblivion male nude mod:
Replace a file lowerbody.nif with a copy, preliminary kept, file.
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The author: yoki
By working out it is used models Kendo Girls, for what separate thanks his authors.